From 257fcb3f41a07776b56950d74fab27c3ac81214d Mon Sep 17 00:00:00 2001
From: Filipp Riabchun <talpa@yandex.ru>
Date: Thu, 6 Jun 2019 00:15:05 +0200
Subject: [PATCH] Don't mutate user's babel config

In my case, it leads to errors because I use my own babel-loader
---
 lib/core/src/server/utils/load-custom-babel-config.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/core/src/server/utils/load-custom-babel-config.js b/lib/core/src/server/utils/load-custom-babel-config.js
index 0c2ca92967d..7a271713c08 100644
--- a/lib/core/src/server/utils/load-custom-babel-config.js
+++ b/lib/core/src/server/utils/load-custom-babel-config.js
@@ -46,7 +46,7 @@ function loadFromPath(babelConfigPath) {
       throw error.js;
     }
 
-    config.babelrc = false;
+    config = { ...config, babelrc: false };
   }
 
   if (!config) return null;